1.Electricity was not discoveredby Edison, but he invented the electric light.電不是愛迪生發現的，但他發明了電燈。
說明：discover指「發現」在自然界中已經存在的東西。invent指「發明，創造」一個自然界中原本不存在的東西。
2.He looksyoung, but if he wears that black coat, he appears to be an old man. He always seems to be much younger in his white coat.他看上去很年輕，但如果穿上了那件黑大衣，就顯得老了，他穿白大衣似乎要年輕得多。
說明：look 指從表面看來，seem 指有一定的事實來推斷，appear 的推斷往往是一個錯覺。